Bolt



April 15 1924. 1,496,416

C. F. J. CHARLISS BOLT Filed Febf26 1920 INVENTOR fw w ATTORN EYS Lil Patented Apr. l5, 1924.

ii l r CHARLES J. CHARLISS, OF HOUSTON,

TEXAS.

BOLT.

Application filed February 26, 1920. Serial No. 361,485.

To (all whom it lm'z-g 001700271:

B i known that 1, CHARLES F. J. CHAR- Ltss, citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have invented certain new and useful improvements in a Bolt, of \Vliizll the following is a specification.

This invention relates to new and useful improvements in a bolt specially designed to hold two or more plates or other memieers togetln-=r, without threads or nuts.

One object of the invention is to provide a bolt which can be inserted and tightened quickly with a stroke of a hammer instead of by the tedious process of screwing on a nut with one wrench, while holding the head with another wrench; and which may be quickly loosened and withdrawn without the reverse process of unscrewing the nut, which often diliicult to remove.

Another object of the invention is to provide a bolt which will not turn when being tightened and therefore which does not recuire a square or hexagonal head or square shank, thus ronducing to economy of matcrial.

Another object of the invention is to provide a boltwhich will not become loose as a resu t of vibration, that is, which may be locked permanently tight without the use of a lock-nut, castle-nut or lock-washer; for this reason and for the further reason that it is quickly applied this form of bolt is particularly useful in bolting on the angle bars or fish plates in the construction of railway tracks.

A further feature of the invention is to provide a bolt which is slightly pointed and which has no threads so that it may be ,lriven into holes which are not in exact alignment and will thus draw the plates or members into proper position without injury to the bolt.

lVith the above and other objects in view, the invention has particular relation to certain novel features of construction, arrangement of parts and use, examples of which are given in this specification and illustrated in, the accompanying drawings wherein Figure 1 shows an end view of the bolt, showing the wedge shaped key fully seated therein.

Figure 2 shows a side elevation thereof,

Figures 3 and 1 show end and side views, respectively, thereof, showing the key driven in place, said Figures 3 and 4. differing from Figures 1 and 2 in the respect only that thicker parts are shown connected in the latter than in the former.-

Referring now more particularly to the drawings wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 refers to a bolt having the head 2 at one end. The end of the bolt opposite the head has a transverse slot 3 cut therethrough. T he outerend of this slot, as shown in Figures 2 and 4 is inclined relative to the axis of the bolt, so that the wedge shaped key 1 will wedge tightly in the slot when driven therein; and for convenience in manufacture the inner end of the slot may be parallel with the outer end as is also illustrated in Figures 2 and 1.

As illustrated in Figure 2, two relatively thin plates 5 and G are secured together by the bolt. This is accomplished by passing the bolt through aligned bolt holes in said members and then driving the wedge shaped key through the slot 5. is illustrated in Figure 4 the plates 5 and 6, se cured together, are somewhat thicker than those illustrated in Figure 2 and consequently the key 4t can not be driven through as far as shown in Figure 2. The key 4 is formed of any suitable material bent in the U-shapcd form with sides pressed closely together. One of the arms of the key is slightly longer than the other both to permit of ready bending with a hammer for locking the wedge in place and also to facilitate entrance of. the wedge into the slot and when the key is driven in pl ce, the eX- tended end is bent out at an angle as illustrated in Figures 1 and 3, so as to prevent the key from slipping and thus loosen the bolt. The lower corner of the longer arm is (Uliaway, or beveled upwardly, as at 7, to facilitate the entrance of the key, where the members to be secured together tend to spring apart so that the exposed part of the slot is sufiicient to receive the key.

hat I claim is:

1. A bolt having its slotted end pointed to facilitate its passage through holes in adja-' cent members not in perfect alignment, and provided with a slot, and a key bent in U- shaped form, adapted to be fitted through the slot and one arm of which is thinner than the other.

2. A securing key formed of a single piece of metal, bent in a U-shaped form,

5 er arm being beveled inwardly 3. A tapering key of substantially uniform thickness and formed of a single piece of metal bent in a U-shaped form and whose arms he closely together, one of said in arms being longer and thinner than the other and having its free end beveled in one (lilGCtlOll. and the free end of the short arm l'ieing" beveled inwardly.

In testimony whereof I have signed my name to this specification in the presence of 15 two subscribing Witnesses.

HARLES F. J. CHARLISS. lVitnesses JAS. V. (him, M. A. CArnicY. 

